print("输入三个数")
a = int(input("输入第一个数字："))
b = int(input("输入第二个数字："))
c = int(input("输入第三个数字："))
max = 0
if a > b and a > c:
    max = a
elif b > a and b > c:
    max = b
elif c > a and c > b:
    max = c
print("最大值为：%d" % max)
